Results 21 to 30 of about 170,507 (251)

Which parameters – rates of survival or growth – determine the best moment for stocking trout larvae?

open access: yesArchives of Polish Fisheries, 2015
The aim of this study was to determine the best moment to stock trout, Salmo trutta L., larvae into the wild. This goal was accomplished by determining weekly changes in the growth parameters of larvae that were fed in seven variants: on the day of 2/3 ...
Domagała Józef   +2 more
doaj   +1 more source

Influences of Salinity on Embryonic and Larval Development of Striped Catfish Pangasianodon hypophthalmus

open access: yesFrontiers in Marine Science, 2021
Salinity intrusion in coastal areas due to climate change is alarming. In this study, the effects of salinity on embryonic and larval development of striped catfish (Pangasianodon hypophthalmus) were studied experimentally.
Farzana Hossain   +6 more
doaj   +1 more source

Superstructures of Zeolitic Imidazolate Frameworks to Single‐ and Multiatom Sites for Electrochemical Energy Conversion

open access: yesSmall, Volume 18, Issue 52, December 28, 2022., 2022
This review summarizes the advances in ZIF‐derived superstructures in the electrochemical hydrogen evolution reaction, oxygen evolution reaction, and oxygen reduction reaction processes, with an emphasis on the role of metal–nitrogen–carbon active sites in catalytic properties.
Rahul Patil   +5 more
wiley   +1 more source

Bacterial Contamination in the Components of the Chickens' Eggs

open access: yesThe Iraqi Journal of Veterinary Medicine, 2020
In 120 hen eggs ( local eggs , hatching eggs and table eggs ) a bacteriological pollution with high rate was observed by isolating 427 bacterial isolates from which 199 isolates related to the egg's shell , 117 isolates related to albumen sac, and 111 ...
S. A. Abed
doaj   +1 more source

Size and Shape of yolk sac as a predictor of pregnancy outcome [PDF]

open access: yesEgyptian Journal of Medical Research, 2022
Background: it is estimated that approximately 30% to 40% of implanted pregnancies resulted in spontaneous abortion during the first trimester, most of which occur in very early stage.
Merehan Hewidy   +2 more
doaj   +1 more source

Change of zinc mobilization and gene expression of key zinc transport proteins between the yolk sac membrane and liver of duck embryonic developing

open access: yesPoultry Science, 2022
: Zinc (Zn) deposition in egg yolk is essential for the rapid growth and complete development of the avian embryo. Thus, it is crucial to obtain maximal Zn mobilization at an appropriate time during development in favor of the survival of avian embryos ...
S.P. Bai   +10 more
doaj  

Kit ligand has a critical role in mouse yolk sac and aorta–gonad–mesonephros hematopoiesis

open access: yesEMBO Reports, 2018
Few studies report on the in vivo requirement for hematopoietic niche factors in the mammalian embryo. Here, we comprehensively analyze the requirement for Kit ligand (Kitl) in the yolk sac and aorta–gonad–mesonephros (AGM) niche.
E. Azzoni   +8 more
semanticscholar   +1 more source

Markers for internal neoplasia in the horse

open access: yesVeterinary Medicine and Science, Volume 9, Issue 1, Page 132-143, January 2023., 2023
The measurement of tumour markers in horses should be performed only in risk groups or in patients with suspicious clinical/laboratory findings (paraneoplastic syndromes). The results should be interpreted with caution as many factors (e.g., young age, pregnancy and inflammation) affect their concentration or activity.
Karolina Drozdzewska, Heidrun Gehlen
wiley   +1 more source

Yolk sac tumor of cryptorchid testis diagnosed by fine needle aspiration cytology

open access: yesJournal of Cytology, 2015
Yolk sac tumor is the most common germ cell tumor in infants and children. Majority of them arise in the gonads. Yolk sac tumor of undescended testis has been rarely diagnosed.
Monisha Choudhury   +3 more
doaj   +1 more source

Differential elasticity in lineage segregation of embryonic stem cells [PDF]

open access: yesarXiv, 2022
The question of what guides lineage segregation is central to development, where cellular differentiation leads to segregated cell populations destined for specialized functions. Here, using optical tweezers measurements of mouse embryonic stem cells (mESCs), we reveal a mechanical mechanism based on differential elasticity in the second lineage ...
arxiv  

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